Novel Complementary Metasurfaces for the Orbital Angular Momentum Generation

被引：0
|
作者：
Chen, Menglin L. N. [1 ]
Jiang, Li Jun [1 ]
Sha, Wei E. I. [1 ]
机构：
[1] Univ Hong Kong, Elect & Elect Engn Dept, Hong Kong, Hong Kong, Peoples R China
来源：
2017 INTERNATIONAL APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY SYMPOSIUM - ITALY (ACES) | 2017年
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D O I：
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Besides amplitude, phase and polarization, wavefront is an important property of electromagnetic (EM) waves. EM waves with twisted wavefronts are known to carry orbital angular momentum (OAM). In this paper, a complementary-type metasurface is proposed to generate an OAM beam at microwave regime. Two metasurfaces that can produce OAM of order 2 and 4 are designed. By using our novel design methods, which are based on circuit model and dyadic Green's function, a high conversion efficiency has been achieved with a very low profile.
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